Materials Literature
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This study investigates alginate-chitosan polyelectrolyte complexes (PECs) in the form of a film, a precipitate, as well as a layer-by-layer (LbL) assembly. The focus of this study is to fully characterize, using the complementary techniques of Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spe…
Abstract The boundary conditions and scope of catalytically stimulated synthesis of ordered intermetallics from solid metals are elucidated. The method is applied to the preparation of AlPd 5 . Its crystal structure has been determined by means of x‐ray powder diffractometry. AlPd 5 forms a structurally unmatched orde…
The crystallographic features of the orbital-ordered and charge-and-orbital-ordered states in ${\mathrm{Sr}}_{2\ensuremath{-}x}{\mathrm{Nd}}_{x}\mathrm{Mn}{\mathrm{O}}_{4}$ have been investigated by in situ observations, using a transmission electron microscope, in an attempt to understand the distinct characteristics…
Using an x-ray diffraction with reciprocal space mapping, 90° domain switching in tetragonal lead zirconate titanate (PZT) thick films under an applied field was studied. An increase in the c-axis lattice constant and a decrease in the a-axis lattice constant due to the piezoelectric effect and switching from a domain…
Abstract Sc 2 Te 5 O 13 and Sc 2 TeO 6 : The First Oxotellurates of Scandium Sc 2 Te 5 O 13 and Sc 2 TeO 6 are the first oxotellurates of scandium that could be structurally elucidated by X‐ray diffraction using single crystals. The scandium(III) oxotellurate(IV) Sc 2 Te 5 O 13 was synthesized by reacting Sc 2 O 3 wit…
Abstract Crystallization of natural rubber (NR) and purified NR after storage hardening of the rubbers under dried condition with phosphorus pentoxide was investigated by dilatometry and polarized light microscopy. The purified NR was prepared by removing proteins and fatty acid ester groups from fresh NR (FNR) throug…
A guided-mode resonant filter incorporating an electro-optically tunable liquid crystal refractive index is demonstrated at a wavelength of 655nm and a tuning range of 4nm. Rigorous coupled wave analysis and finite difference time domain analysis are used to simulate the characteristics of the filter during liquid cry…
Abstract LuF[SeO 3 ] and LuCl[SeO 3 ]: Two Non ‐Isotypic Halide Oxoselenates(IV) of Lutetium Despite the formal similarity of LuF[SeO 3 ] and LuCl[SeO 3 ] both compounds show significant structural differences due to the different positions of the halide anions (X − ) within the pentagonal bipyramids [LuO 5 X 2 ] 9− .…
To establish a new technique for monitoring and control of high-level tritium in a fuel circulation system of the fusion reactors, the applicability of a new technique to elemental tritium and tritiated water was discussed. The new technique is based on the utilization of x-rays induced by β-rays from tritium, and it…
Dense, highly 〈110〉‐textured BaTiO 3 ceramics were prepared by the reactive‐templated grain growth method. Needlelike TiO 2 (rutile) particles with their needle axis parallel to 〈001〉 were used as reactive template particles. Slurry containing an equimolar mixture of TiO 2 and BaCO 3 was tape cast to form a green comp…
Thermogravimetric analysis was used to study the reactivity of aluminum powders in air, oxygen, and nitrogen. In addition, the data were used to characterize active Al content, Al oxide content, volatile impurity content, particle size, and particle size distribution. Weight gains from complete oxidation of the Al wer…
The authors present first-principles density-functional theory studies on the atomic structure of the In2O3–ZnO system. They find that the In2O3–ZnO system has a polytypoid structure, which consists of wurtzite (Zn∕In)O slabs separated by single In–O octahedral layers that are inversion boundaries. Another type of bou…
Well‐dispersed spherical lanthanum oxycarbonate (La 2 O 2 CO 3 ) and La 2 O 3 particles with a flower‐like morphology were synthesized via a simultaneous polymerization–precipitate reaction, metamorphic reconstruction, and mineralization under a hydrothermal condition as well as subsequent calcination. The La 2 O 2 CO…
Temperature dependent cw- and time-resolved photoluminescence combined with absorption measurements are employed to evaluate the origin of radiative recombination in ZnCdO alloys grown by molecular-beam epitaxy. The near-band-edge emission is attributed to recombination of excitons localized within band tail states li…
Martensitic, magnetic transformations, and crystal structures in Pd–In–Fe alloys were investigated. It was confirmed that some Pd–In–Fe alloys show martensitic transformation from a Heusler-type (L21) ordered bcc phase to a 2M-type (DO22) structure and that an almost perfect superelastic effect accompany the transform…
Abstract The four new compounds CsTmCoS 3 , CsYbCoS 3 , CsHoCoSe 3 , and CsYbCoSe 3 have been synthesized at 1123 K. These black‐colored isostructural compounds crystallize in the KZrCuS 3 structure type with four formula units in space group Cmcm of the orthorhombic system. The structure of these compounds is compose…
The present work investigates the evolution of micro-Raman spectra of (1−x)Pb(Fe2∕3W1∕3)O3−xPbTiO3 (PFWT) (x=0.50) thin films in the temperature range from 80to600K. Raman and dielectric data indicate that the crystal structure changes from tetragonal to cubic, i.e., a ferroelectric phase transition at 575K. The diele…
CdMnS thin films grown on indium tin oxide substrate exhibit a ferroelectric property. The remnant polarization of CdMnS films was around 0.025μC∕cm2 for 10% of manganese with a sustained polarization endurance for several cycles. Persisting and highly reproducible bistable switching of about five orders in magnitude…
A narrow size distribution of ZnO nanorod array has been synthesized on silicon substrate by pulsed laser deposition (PLD) in argon ambient. ZnO∕Er2O3 core-shell nanostructures were then formed through PLD of a thin Er2O3 layer onto the fabricated ZnO nanorod surface. Transmission electron microscopy analysis shows th…
Photoluminescence (PL) behavior of SrBi2Nb2O9 (SBN) powders was explained by means of β-Bi2O3 phase on the SBN lattice. Oxygen vacancies and recombination of electrons holes in the valence band lead to the formation of [NbO5∙VOx], [NbO5∙VO•] and [NbO5∙VO••] complex clusters which are the main reason for the PL at room…